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DXA Quiz

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Questions and Answers

What is the primary purpose of Dual-energy X-ray absorptiometry (DXA)?

Diagnosing metabolic diseases

Detecting infections in bones

Measuring bone mineral density (correct)

Assessing body composition

Why does DXA use two X-ray beams with different energy levels?

To diagnose metabolic diseases accurately

To determine bone mineral density by subtracting soft tissue absorption (correct)

To detect infections in bones more effectively

To assess the composition of soft tissues

What distinguishes DXA from a nuclear bone scan?

DXA is used for diagnosing and following osteoporosis (correct)

DXA is used to detect infections, fractures, or tumors in bones

DXA is sensitive to certain metabolic diseases of bones

DXA is used to assess body composition

Why is it not possible to determine bone attenuation from a single X-ray beam?

The attenuation coefficients of soft tissue and bone vary with the energy of X-rays Signup and view all the answers

What does the difference in total absorption between the two X-ray energies allow DXA to do?

Subtract out the absorption by soft tissue Signup and view all the answers

What is the primary purpose of Dual-energy X-ray absorptiometry (DXA)?

Measuring bone mineral density Signup and view all the answers

What distinguishes DXA from a nuclear bone scan?

DXA measures bone mineral density, while the nuclear bone scan is sensitive to certain metabolic diseases of bones Signup and view all the answers

Why does DXA use two energies of X-ray?

To subtract out the absorption by soft tissue Signup and view all the answers

What allows DXA to determine bone mineral density from the absorption of each X-ray beam?

Subtracting out the absorption of soft tissue Signup and view all the answers

What is the most widely used and most thoroughly studied bone density measurement technology?

Dual-energy X-ray absorptiometry (DXA) Signup and view all the answers

DXA Quiz

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Podcast

Questions and Answers

What is the primary purpose of Dual-energy X-ray absorptiometry (DXA)?

Why does DXA use two X-ray beams with different energy levels?

What distinguishes DXA from a nuclear bone scan?

Why is it not possible to determine bone attenuation from a single X-ray beam?

What does the difference in total absorption between the two X-ray energies allow DXA to do?

What is the primary purpose of Dual-energy X-ray absorptiometry (DXA)?

What distinguishes DXA from a nuclear bone scan?

Why does DXA use two energies of X-ray?

What allows DXA to determine bone mineral density from the absorption of each X-ray beam?

What is the most widely used and most thoroughly studied bone density measurement technology?

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